Solve problem

Endpoint for solving inventory optimisation problem. OnStock performs Multi Echelon Inventory Optimization (MEIO).
In contrast to the single echelon approximation that looks at nodes separately, here, the supply chain is seen as a whole.
OnStock implements the Guaranteed Service Model, which considers the processing times and the demands in a supply network to be deterministic.

There are multiple possible problems:

1. Base stock placement: BASE_STOCK solver to send a BaseRequest
2. RQ planning: RQ_STOCK solver to send an RQRequest

References: Solvice documentation, Long form documentation, Inventory Optimization, Base stock model, RQ model